Systematization of spatial functional layouts and pedestrian wind comfort assessment for an ultra-thin triangular free form shell structure

This paper aims to study various spatial functional layouts and test how these different design approaches affect pedestrian comfort under shell structures. The considered shell shape was developed aiming an efficient distribution of loads allowing prefabrication with ultra-thin concrete elements. As shell structures can define semiexterior spaces and assume open locations within some urban contexts, the study of how different design strategies for the underlying space affect user's comfort is of upmost importance. Several wind tunnel tests were performed on a triangular thin shell scale model with a few different spatial user's area layouts allowing to understand to which extent some design decisions compromise pedestrian wind comfort. The experimental campaign follows an iterative process leading to conclusions that can guide future projects and contribute to a multidisciplinary and transversal understanding of these innovative structures.